Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4828075 | Elevator drive control apparatus for smooth start-up | Klaus-Jurgen Klingbeil | 1989-05-09 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4828075 | Elevator drive control apparatus for smooth start-up | Klaus-Jurgen Klingbeil | 1989-05-09 |